creamer



(No Model.) 2 Sheets-Sheet 1. H, UREAMER.

STEAM TRAP.

No. 404,174. Patented May 28, 1889.

WITNESSES:

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2 Sheets-Sheet '2.

(No Model.)

H. GRBAMBR;

STEAM TRAP.

No. 404,174. Patented May 28, 1889.

WITNESSES:

UNITED STATES PATENT OFFICE.

HENRY CREAMER, OF NEWV YORK, N. Y.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 404,174, dated May 28, 1889. Application filed July 26, 1888. Serial No. 281,056. (No model.)

To all whom it may concern:

Be it known that I, HENRY CREAMER, of the city of New York, in the county of New York, in the State of New York, have invented certain new and useful Improvements in Steam-Traps, of which the following is a specification.

This invention relates to certain new and useful improvements in that class of machines known as steam-traps, and which serve to force the water of condensation or returns from the steam-pipes back into the boiler.

The object of my invention is to provide a steam-trap which is simple in construction and effective and reliable in use.

The invention consists in the construction and combination of parts and details, as will be fully described and set forth hereinafter, and then pointed out in the claims.

In the accompanying drawings, Figure 1 is vertical longitudinal section of my improved steam-trap. Fig. 2 is a side View of the same. Fig. 3 is an enlarged longitudinal vertical section of the valve, and Fig.4 is a cross-sectional view on line 0c 00, Fig. 3.

Similar letters of reference indicate corresponding parts. 7

The steam-cylinder A and water-cylinder B are cast integral, the steam-cylinder having a greater diameter than the water-cylinder. The steam-cylinder A is provided on its lower open end with a head, 0, having an internal annular projection or ridge, 0, resting against the sides of the cylinder. steam-cylinder A, where the same is connected with the water-cylinder B, a horizontal internal annular flange, D, is provided. The steam-cylinder A contains the piston E, the water-cylinder B the piston F, both pistons being connected by the rod G. The steamcylinder A is provided on one side with an external longitudinal projection, A, in which is formed the steam-channel a, extending down to the bottom edge of said cylinder, where it is connected with a channel, 1), formed in the projection C on the under side of said head 0, which channel b leads to the bottom of the steam-cylinder.

The valve WV, which serves to close the end of the channel I) at times, is secured to a stem passed loosely through an aperture in the free end of the spring W on the upper surface of At the top of thethe head 0, said stem being provided on its upper end with a head that rests upon the top of the spring, so that when the spring snaps upward it raises the valve IV. The projection A is also provided with a short channel, 0, leading to the top of the steamcylinder. From the upper part of the steamcylinder the pipe H projects, which serves for conducting the steam forced out of the cylinder A to the pipes for the returns or water of condensation.

The water-cylinder F has a hemispherical bonnet, I, provided with an external projec- Lion, I, in which is mounted a rocking transverse shaft, J, from the inner part of which an arm, K, projects that supports the sphericalfioatlby means of a suitable rod. The shaft J is provided on its outer end with-a crank, M, from which the rod Nprojects downward, having a hook, N, on its lower end. A shaft, 0, is journaled in the side of the water-cylinder B, near the top, and is provided on its,

outer end with a crank, 0, connected by a rod, 0 with the rod N, and on its inner end the shaft 0 is provided with an arm, 0 close to the inner surface of the cylinder, as shown in dotted lines in Fig. 2.- The pipe P connects the upper part of the water-cylinder with a T-shaped coupling, P, provided with the two check-valves P and P opening in the same direction. The T-coupling P is connected at one end with the pipe Q for conducting the water of the returns into the water-cylinder B, and at the opposite end with the pipe Q, that serves to conduct the water from the water-cylinder to the boiler. The valve-casing R is provided at one end with a head, R and at the opposite end with a bonnet, R having the neck It. The valvecasing is also provided with the channel d, which is in communication with the upper end of the channel 0, Fig. 1, and with the channel 6, which is in communication with the upper end of the channel a. A port at, in the face T leads to the upper end of the channel (I. A port, e, in the face T leads to the upper end of the channel 6, and a channel, f, (shown in dotted lines in Fig. 4,) connects the port e with the port g. The ports d and e are separated by the rim h. The channels 01 and e are separated by the rib is.

The valve S on the shaft S is mounted to rock on the face T of the valve-casing, and is provided with the port i" and the segmental recess S in the face resting against the face T of the casing. In the opposite face the valve is pi 'ovided with the neck T having the diametricallyopposite longitudinal groove T said neck serving to receive the inner end of a shaft, U, mounted to rock in the neck R of the bonnet, and the said groove T serves to receive the opposite ends of a transverse pin, U, in the inner end of said shaft U. The shaft U is provided with a collar, U that rests against the inner surface of the closed end of the neck E". On that end of the shaft S opposite the one on which the valve S is mounted the disk S is mounted to turn in a recess, S", of the valve-casing.

V is a steam'channel in the valve-casing. V is a neck to which the live-steam pipe V 2 from the boiler is connected. On the outer end of the shaft U the arm X is keyed and provided with a laterally-projecting pin, X, which the hook N on the lower end of the rod N can engage, and with a weight, X

The operation is as follows: The several parts being in the positions shown in Fig. 1, the water from the return -pipe passes through the pipes Q, raises the check-valve P and passes through the pipe P into the upper or water cylinder, 13, and accumulates in the same until it reaches the float L, which it raises. Thereby the crank'arm M is raised, as is also the rod N, and thus the arm X of the steam-valve is raised and the valve so adjusted as to admit steam through the channels a and I) into the bottom part of the steamcylinder A and below the steam-piston E, which is thus raised. The water-piston F is raised with it and forces the water out of the water-cylinder 13 through the p pe P, the check-valve P and the pipe Q. lVhen the piston F reaches the arm 0 it strikes against the same and moves it upward, whereby the lower end of the arm 0 is swung in the direction of the arrow 00 and the rod 0 is moved in the same direction, and thereby the hook N is disengaged from the pin X on the arm X, which arm has been raised, thus permitting the arm X to drop under the action of its weight X whereby the valve is turned in such manner as to shut off the live steam and establish communication bet een the upper ends of the channels a and 0, so as to permit the steam to pass from the bottom of the steam-cylinder A through the channels I) and a, the valve, and the channel 0 into the upper part of the steam-cylinder and above the piston. As soon as this connection is made by the dropping of the leverX and the pressure is removed from the under side of the piston E, both pistons begin to descend under the action of their own weight, and the steam that has been used to raise the pistons passes from the under side of the piston E through the channels and valve, in the manner described, into the upper part of the cylnder E. Just before thcpiston E completes its downstroke its under side strikes the free end of the spring iv and presses the same toward the head C, thereby permitting the valve V to find its seating and to close the channel Z). The steam in the bottom part of the steam-cylinderis thus prevented from escaping and forms a cushion ten the descending pistons. \Vhen live steam passes down through the channels a I), it can raise the valve \V, as the stem of the valve has play in the end of the spring W", and thus the live steam can pass into the bottom part of the steam-cylinder and raise the pistons. hen the pistons E and F are lowered, they rest on the annular ridge 0 and flange I), respectively, which form seats for said pistons and serve to prevent water passing into the bottom part of the steam-cylinder E. As the piston F descends the float L descends, as does also the rod N, and its hook N catches on the pin X ,so as to raise the lever X when the float rises. hen the lever X is in its lowered position, the port S of the valve S is on the rib 7r, between the channels (Z and 8, thus preventing the live steam from passing into the channels. The recess S extends over the ports (1 and c and establishes communication between the channels cl and c, the port. 9 being closed by the valve. The steam can now pass from the bottom of the cylinder through the channels Z) and a into the channel 6, through the channel f, the recess 8* of the valve, and the port (1, into the channel (Z, and then into the channel 0, and into the top of the cylinder. \V hen the leverX is raised, the port S in the valve S registers with the port g, and the recess S does not connect the ports (1 and e. The live steam can now pass through the registering-ports S and 9 into the channel 6 and from the same through the channels 0. and 1) into the bottom part of the cylinder. The live steam in the casing, acting on the valve S, presses the same against the seat T in the direction of the arrow X but as the live steam also acts on the disk S in the inverse direction of the arrow it balances the valve. As the valve is balanced, the connection between the valve S and the shaft U is not made rigid.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a steam-trap, the combination, with the united steam and water cylinders, of a head on the open end of the steam-cylinder, an internal annular projection or ridge on the said head, said projection resting against the inner surface of the sides of the cylinder and forming a seat for the piston in said steamcylinder, substantially as herein shown and described.

2. In a steam-trap, the steam and water cylinder made integral and provided with an internal annular flange where the ends of the two cylinders meet, which flange forms a seat for the piston in the water-cylinder, substantiall as herein shown and described.

In a stean'i-trap, the combination, with a ITO cylinder and head, which head is provided with a steam-channel, of a Valve for closing the end of said channel, a spring on the inner surface of the head, and a valve-stem held loosely in said spring, substantially as herein shown and described.

4. In a steam-trap, the combination, with united steam and Water cylinders, of a piston in each cylinder, a rod uniting said pistons, a bonnet on the top of the water-cylinder, a float in said bonnet, a rocking shaft supporting said float, and a Valve-actuating rod connected with the outer end of said shaft, substantially as herein shown and described.

5. In a steam-trap, the combination, with united steam and water cylinders, of a piston in each cylinder, a rod uniting the two pistons, a transverse shaft in the top of the water-cylinder, a float suspended from the inner end of said shaft, a valve-actuating rod connected with the outer end of said shaft, a camlever in the water-cylinder, a shaft on which said cam-lever is secured, and a rod connecting the outer end of said shaft with the valveactuating rod, substantially as herein shown and described.

6. In a steam-trap, the combination, with united steam and water cylinders, connected pistons in the cylinders, a float in the top of the water-cylinder, a valve-actuating rod connected with the float and provided with a hook on its lower end, of a rocking steam-valve, a weighted lever on said valve, and a pin on said rod, on which pin the hook on the lower end of the valve-actuating rod can catch, substantially as herein shown and described.

7. The combination, with a valve-casing, of

a rocking shaft in the same, a valve 011 one end of the shaft, and a balancing disk on the opposite end of the shaft, substantially as herein shown and described.

8. The combination, with a valve-casing, of a rocking shaft in the same, the valve S on one end of the said shaft, the balancing-disk S on the opposite end of the shaft, the neck T on the outer side of the valve, which neckhas the two opposite longitudinal grooves T the rocking shaft U in the bonnet R of the casing, the transverse pin U in the inner end of the shaft U, the ends of said pin passing into the grooves T and a lever on the outer end of the shaft U, substantially as herein shown and described.

9. The combination, with a valve-casing, of the bonnet R provided with the neck It, the rocking shaft U in said neck, a weighted lever on the outer end of said shaft, the collar U on said shaft U, and resting against the inner surface of the closed end of the neck R the transverse pin U in the inner end of the shaft U, the rocking shaft S the valve 8 on one end of the same, the neck T on said valve, which neck is provided with the opposite lon gitudinal grooves T and the balancing-disk S on the opposite end of the rocking shaft, substantially as herein shown and described.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

HENRY OREAMER.

Vitnesses:

OSCAR F. GUNZ, MARTIN PETRY. 

